Configurable parameters per job

[WenheLI]

Right now, our pipeline is bound with a fixed set of hyper-parameter and this is not convenient to run multi-job with different sets of hyper-parameter. We should allow passing hyper-parameter on a job-scale.

To implement it:

• We need to add one column in Job model: param which is a JSON string
  • JSON string should have the following structure:

[{
  "pluginName": {
    "pluginParams1": "",
    "pluginParams2": "",
  }
}]

If the pluginName in the pipeline but does not exist in the job param config, it will retrieve the config from pipeline.

• We need to add a new API under CLI, something like: pipcook run <jobid> [param-json]
• This should also connect with pipboard for a GUI operation.

[yorkie]

This should also connect with pipboard for a GUI operation.

I will add a new button "Run with parameters".

[FeelyChau]

Is this done by PR #620 ？

[WenheLI]

Frontend interaction does not get a chance to implement yet